JPS6139124A - Graphic indicating device - Google Patents

Abstract

PURPOSE:To detect an accurate graphic position by connecting a brushless electric generator to an X-axis and a Y-axis rotating shaft which contact a ball and transducing rotary motion into electric signals, and detecting the rotating directions of those generators and forming waveforms. CONSTITUTION:The brushless electric generators 13 and 14 are coupled with the X-axis rotating shaft 7 and Y-axis rotating shaft 8 respectively and the rotary motions of those shafts 7 and 8 are transduced into electric signals. Those electric signals are converted into pulse signals by rotating direction detecting and waveform generating circuits 15 and 16 connected to the generators 13 and 14, and the pulse signals are outputted. Therefore, the angle of rotation of the ball 1 for movement detection which rolls on a graphic is detected by the shafts 7 and 8 and converted into electric signals by the generators 13 and 14 without any mechanical contacting, and those electric signals are transmitted to specific information equipment as pulse signals.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a figure indicating device in an information device having a figure/image processing function, and more specifically, to a movement detection ball that rolls on a figure. The present invention relates to a graphic pointing device having a function of detecting the rotation angle of the object and obtaining its coordinate values.

[Conventional technology]

Generally, this type of graphical device is equipped with switches (41, (51) on a device body (3) equipped with a movement detection ball (1) and a support ball (2), as shown in FIG.
It is connected to an input/output signal transmission unit (not shown) via a cord (6), and detects the rotation angle of the movement detection ball (1) rolling on the figure to be detected. Coordinate values can now be obtained. in this case,
As shown in FIG. 3, the conventional coordinate value detection unit has a rotatable X-axis rotating shaft (7) and a Y-axis rotating shaft (8) that contact the movement detection ball (1) in the circumferential direction. A rotation detecting body (1) having a conductive part (9) and an insulating part (1) is connected alternately, and the ball is turned on and off by turning on and off a contact (12) such as a brush in contact with the conductive part (9). (1) The rotation angle was detected.

[Problem that the invention seeks to solve]

However, in the conventional figure indicating device of this kind, since detection is performed at a thin contact portion between the conductive part (9) of the rotation detecting body (11) and the contact point (12), contact failure is likely to occur, and accurate figures cannot be drawn. There is a problem that position detection is difficult, and there is currently a desire for improvement.

. [Means and effects for solving the problems] This invention was made with the intention of solving the above problems.
In order to solve the above-mentioned problems, we have developed a figure pointing device that is capable of highly reliable figure position detection by eliminating mechanical contact in the part that converts rotational motion into electrical signals. This is what we are trying to provide.

That is, the present invention provides a figure pointing device that detects the rotation angle of a movement detection ball rolling on a figure to obtain coordinate values, in which a rotatable
A brushless generator that converts the rotational motion of each shaft into an electrical signal is connected to the axial rotation shaft and the X-axis rotation shaft, and a rotation direction detection and waveform shaping circuit is connected to each brushless generator. The present invention relates to a graphic indicating device characterized in that the rotational movement of the X-axis and/or the X-axis rotating shaft that rotates according to the rotation angle can be extracted as an electrical signal without mechanical contact.

〔Example〕

Embodiments of the present invention will be described in detail below based on the drawings.

FIG. 1 is a schematic explanatory diagram showing the structure of the figure indicating device of the present invention, which includes a movement detection ball (1), an X-axis rotation shaft (7) that rotates in contact with this ball (1), and an X-axis rotation shaft (7) that rotates in contact with the ball (1). The shaft (8) has the same structure as the conventional one, but differs from the conventional graphic pointing device in the following points. That is,
The X-axis rotating shaft (7) and the X-axis rotating shaft (8
) are connected to brushless generators a3+ and Q41, respectively, to convert the rotational motion of these rotating shafts (7) and (8) into electrical signals. and,
The electric signal converted by the brushless generator (131, (1Φ) is connected to the brushless generator 1t31. (141) and the rotational direction detection and waveform shaping circuit (15), (16)
The signal is converted into a pulse signal and taken out as an output signal.

Therefore, according to the figure indicating device of the present invention, the rotation angle of the movement detection ball (1) moving on the figure is detected by the X-axis rotating shaft (7) and/or the Y-axis rotating shaft (8), and It can be converted into an electric signal by the brushless generators Q3) and Q41 without mechanical contact, and the electric signal can be converted into a pulse signal and transmitted to a predetermined information device (not shown).

〔Effect of the invention〕

As explained above, according to the graphic indicating device of the present invention, the brushless generator that converts the rotational motion of each shaft into an electric signal is attached to the X-axis and X-axis rotation shafts that detect the rotation angle of the movement detection ball. and each brushless generator is connected to a rotation direction detection and waveform shaping circuit.
Rotary motion can be converted into an electrical signal without mechanical contact, and the position of a figure can be detected accurately, so that it can be used as a highly reliable figure pointing device.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing the structure of a graphic pointing device of the present invention, FIG. 2 is a perspective view showing the external appearance of the graphic pointing device, and FIG. 3 is a schematic perspective view showing the structure of a conventional graphic pointing device. , [Explanation of symbols] (1)...Movement detection ball (2)...Support ball

Claims (1)

[Claims] In a figure indicating device configured to obtain coordinate values by detecting the rotation angle of a movement detection ball rolling on a figure, each shaft is attached to a rotatable X-axis rotation shaft and a Y-axis rotation shaft that are in contact with the ball. 1. A graphic indicating device comprising: brushless generators that convert rotational motion of the brushless generators into electrical signals; and a rotational direction detection and waveform shaping circuit connected to each brushless generator.